I get weather and it seems to be getting out but nothing else,don't guess I'm holding my mouth right.Been awhile since I have been in a truck.

This is no transmission sensor problem, it is a mechanical issue in the transmission.

best guess, most cars hold about 5 quarts. if you are changing the oil, put in 4 quarts and then check the level after you start the car and let it run for a minute. don't check it right away. give it a minute for the oil to get back down to the oil pan.

have them check when its cold sounds like a bad regulator in alt

My guess is that the refrigerant is low.... and it seems the leak isn't too bad. Below a certain point there's a safety switch the won't let the a/c work if not enough pressure. It appears that your truck is right near that level. A can of refrigerant with a gauge runs about $20 ... I'll guess you'll need half can or so to get the charge back in to the normal range.

Wild guess. Is there a timer mode on it that would turn it off after awhile?

Look for missing or loose grounds. LOAD test the battery, holding a charge and ability to perform are two different things.

Doc

fuel pump is going

You can try a master reset. This will delete any frequencies that are programmed. Here is the way to do a reset...
Turn scanner off. Hold down, 2-9-HOLD (all three keys at once)while turning on the scanner. Keep holding the keys down for about 3 seconds. The word CLEAr should come up on the screen.

change brake light switch . check brake switch wiring . for shorting then check tail light bulbs sockets. if you cant find it. you probably going have to buy a short finder.

starter